OSI/AS Management Programming Manual
ALTER SERVICE Command
Commands and Responses
056785 Tandem Computers Incorporated 5–79
ZESIS-NOTIFY-IS
controls whether the ES-IS protocol reports its configuration whenever it
determines that a new intermediate system is first available. This field is
applicable only if ZESIS-ENABLE is set to ZSPI-VAL-TRUE. If ZESIS-
NOTIFY-IS is set to ZSPI-VAL-TRUE, the configuration is reported; if it is set
to ZSPI-VAL-FALSE, the configuration is not reported. The value initially set
by the OSI manager is ZSPI-VAL-FALSE.
ZESIS-XSUM
controls whether the ES-IS protocol includes a checksum in outgoing transport
protocol data units (TPDUs). This field is applicable only if ZESIS-ENABLE is
set to ZSPI-VAL-TRUE. If ZESIS-XSUM is set to ZSPI-VAL-TRUE, a checksum
is included; if it is set to ZSPI-VAL-FALSE, a checksum is not included. The
value initially set by the OSI manager is ZSPI-VAL-FALSE.
ZESIS-QUERY-TIME
is the maximum amount of time the ES-IS protocol should wait for a reply to
its inquiry of NSAP-SNPA mapping before retrying or terminating its inquiry.
This field is applicable only if ZESIS-ENABLE is set to ZSPI-VAL-TRUE. The
waiting time is expressed in hundredths of a second (0.01 seconds per
increment). The values range from 1 (0.01 second) through 65535 (655.35
seconds). The value initially set by the OSI manager is 100 (1 second).
ZESIS-QUERY-RETRY
is the maximum number of times unacknowledged NSAP-SNPA mapping
inquiries are retransmitted by the ES-IS protocol before the inquiry is
terminated. This field is applicable only if ZESIS-ENABLE is set to ZSPI-VAL-
TRUE. The values range from 0 through 32767. The value initially set by the
OSI manager is 3.
ZIP-LIFETIME
is the length of the time interval during which an internet protocol data unit
(IPDU) can exist before being discarded during its transit through the
subnetwork. This field is applicable only if the full subset of the IP is enabled
(see “Operational Notes”). The interval is expressed in hundredths of a
second (0.01 seconds per increment), rounded down to the nearest half-
second. The values range from 100 (1 second) through 30000 (300 seconds).
The value initially set by the OSI manager is 1500 (15 seconds).
ZIP-XSUM
controls whether a checksum is included in the outgoing IPDUs. This field is
applicable only if the full subset of the IP is enabled (see “Operational Notes”).
If ZIP-XSUM is set to ZSPI-VAL-TRUE, a checksum is included; if it is set to